Every time I load the game it stops at 40% loading bitmaps. Here is the log:

0.000 2017-08-12 11:32:43; Factorio 0.15.31 (build 30773, mac, steam)
0.000 Operating system: Mac OS X 10.10.5
0.000 Program arguments: "/Users/user/Library/Application Support/Steam/steamapps/common/Factorio/factorio ...